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74ALS20A Datasheet(PDF) 2 Page - NXP Semiconductors

Part No. 74ALS20A
Description  Dual 4-Input NAND gate
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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74ALS20A Datasheet(HTML) 2 Page - NXP Semiconductors

   
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Philips Semiconductors
Product specification
74ALS20A
Dual 4-input NAND gate
2
1996 Jul 01
853–0859 01670
TYPE
TYPICAL
PROPAGATION DELAY
TYPICAL
SUPPLY CURRENT
(TOTAL)
74ALS20A
4.5ns
0.65mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
COMMERCIAL RANGE
VCC = 5V ±10%,
Tamb = 0°C to +70°C
DRAWING
NUMBER
14-pin plastic DIP
74ALS20AN
SOT27-1
14-pin plastic SO
74ALS20AD
SOT108-1
PIN CONFIGURATION
14
13
12
11
10
9
8
7
6
5
4
3
2
1
1A
1B
NC
1C
1D
1Y
GND
2Y
2A
2B
NC
2C
2D
VCC
SC00024
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74ALS (U.L.)
HIGH/LOW
LOAD VALUE
HIGH/LOW
nA, nB, nC, nD
Data inputs
1.0/1.0
20
µA/0.1mA
nY
Data outputs
20/80
0.4mA/8mA
NOTE:
One (1.0) ALS unit load is defined as: 20
µA in the High state and 0.1mA in the Low state.
LOGIC SYMBOL
VCC = Pin 14
GND = Pin 7
1245
9
10
12
13
1A 1B 1C 1D 2A 2B 2C 2D
1Y 2Y
68
SC00025
IEC/IEEE SYMBOL
SF00068
&
6
8
1
2
4
5
9
10
12
13
LOGIC DIAGRAM
VCC = Pin 14
GND = Pin 7
1A
1B
1Y
6
1
2
SC00026
1C
4
1D
5
2A
2B
2Y
8
9
10
2C
12
2D
13
FUNCTION TABLE
INPUTS
OUTPUT
nA
nB
nC
nD
nY
H
H
H
H
L
L
X
X
X
H
X
L
X
X
H
X
X
L
X
H
X
X
X
L
H
H = High voltage level
L
= Low voltage level
X = Don’t care


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